Yeah, i can't say i disagree but i'd like to go with the overall performances only, without taking into account the other things.
Hamsik is more experienced perhaps but he's also younger than Giovinco.
Giovinco is more talented and i'd dare make a prediction that he'll make a bigger name in football than Hamsik (ballon d'or is my prediction). He also had a very good season but i must give the advantage to the Slovakian.
Like i said, if we take only the overall performances into account, Marek Hamsik was one of the best 5/6 players of this year's serie A, together with Del Piero, Cambiasso, Ibrahimovic, Mutu and Di Natale. Gio was great but he wasn't one of the best serie A players. We can blame Cagni and Empoli's below average squad for that, but it won't change anything regarding this poll's question.